Section 307.1103  Cyanide

a)         No waste to any public sewer system must contain more than 10 mg/ℓ total cyanide (STORET number 00720) provided any sample tested must not release more than 2 mg/ℓ of cyanide when tested at a pH of 4.5 and at a temperature of 66º C (150º F) for a period of 30 minutes, except as permitted by subsection (b) of this Section.

b)         Upon application by a county, municipality, sanitary district or public utility and approval by the Agency, based upon determination by the Agency that no violation of the effluent standards of 35 Ill. Adm. Code 304 will result and that no hazard to workers in such sewage works will result, limited additional amounts of cyanide exceeding the standards in subsection (a) of this Section may be discharged to the sewage works of such county, sanitary district, municipality or public utility.

c)         Nothing in this Section may be construed as limiting the authority of any county, municipality, sanitary district, or public utility to impose any more stringent standards or limitations on cyanide discharges to its sewage works.

d)         Any actions undertaken pursuant to subsection (b) of this Section willbe subject to the limitations of Section 307.2400(b)(7).

(Source:  Amended at 28 Ill. Reg. 3076, effective February 6, 2004)